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Lets face it, as far as O2 cleaning goes some of us are going to it do while
other's wont.  While the standard scuba regulators (Out of the box) may or
may not be compatible with O2. One thing to consider when comparing its use
to industrial applications, most of us do not use 02 in the quantities or as
often that the welding, aerospace or the medical industry does.  Keeping this
in mind you may not see the degradation as fast.  My main concern is the
material used for o-rings. The scuba industry at one time recommended Viton
Orings when using 02.  However when you look  up the compatibility of Viton
over Butyl or Noryl plastic the latter are much better choices.  This
information comes from Parker and the 9th edition of  Marks Standard Handbook
for Mechanical Engineers and not from govt. sources.  If anybody would like a
copy of this information I will be more than happy to fax it to them.  One
other factor may be considered, are regulator mfgs using O2 compatible grease
at this time.  If they are than this may be a reason their have been no
problems.  The person that does my regulator service on my non O2 reg uses an
O2 compataible grease.

As for me, I will continue to have my equipment 02 cleaned when I go over
40%.  My reason is simple.  I have two children that I want to see grow up
and share my enthusiasm for diving.  When they are grown my attitude may
change or I maybe to set in my ways then, only time will tell.  This comes to
an individually choice.  Be responsible for you self and considerate of those
that may dive with you.

Sure would like to see more on this subject

Alex Varouxis

E-mail avarouxis@al*.co*  or Alex1@ac*.di*.ne*
Phone (703) 534-3408
Fax     (703) 549-5999

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